If you refer to someone as a scofflaw, you mean that they refuse to obey the law, for example, by failing to pay their debts or by ignoring minor legal regulations.
[US, disapproval]
We want unsafe trucks off the road and scofflaws brought to justice.
scofflaw in British English
(ˈskɒflɔː)
noun
US informal
a person who habitually flouts or violates the law, esp one who fails to pay debts or answer summonses
scofflaw in American English
(ˈskɑfˌlɔ)
US
noun
Informal
a habitual or flagrant violator of laws, esp. traffic or liquor laws